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/*
Copyright (C) 2016-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/
/*
WARNING: This file was generated by the dkct program (see
http://dktools.sourceforge.net/ for details).
Changes you make here will be lost if dkct is run again!
You should modify the original source and run dkct on it.
Original source: dk4fpe.ctr
*/
#ifndef DK4FPE_H_INCLUDED
/** Avoid multiple inclusions. */
#define DK4FPE_H_INCLUDED 1
#line 9 "dk4fpe.ctr"
/** @file dk4fpe.h Floating point exceptions.
Note: When using functions from this module you should use
the compiler pragma to grant access to the floating
point environment.
This disables optimization of floating point operations.
The availability and the exact form of the pragma depends
on your compiler.
* pragma STDC FENV_ACCESS ON
SUN workshop compiler.
Probably other Unix/Linux compilers.
* pragma fenv_access (on)
Visual Studio on Windows.
In version 4.13.1 and above the pragma is no longer included in
this header file as you probably want to apply it to some
code sections of a file only.
*/
#ifndef DK4CONF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif
#ifndef DK4TYPES_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4types.h"
#else
#include <dktools-4/dk4types.h>
#endif
#endif
#if DK4_HAVE_MATH_H
#ifndef MATH_H_INCLUDED
#if DK4_ON_WINDOWS
#ifndef _USE_MATH_DEFINES
#define _USE_MATH_DEFINES 1
#endif
#endif
#include <math.h>
#define MATH_H_INCLUDED 1
#endif
#endif
#if DK4_HAVE_FLOAT_H
#ifndef FLOAT_H_INCLUDED
#include <float.h>
#define FLOAT_H_INCLUDED 1
#endif
#endif
#if DK4_HAVE_FENV_H
#ifndef FENV_H_INCLUDED
#include <fenv.h>
#define FENV_H_INCLUDED 1
#endif
#endif
#ifndef DK4ERROR_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4error.h"
#else
#include <dktools-4/dk4error.h>
#endif
#endif
#if _WIN32 && defined(_MSC_VER)
/** Floating point exception set.
*/
typedef unsigned int dk4_fpe_t;
#else
/** Floating point exception set.
*/
typedef int dk4_fpe_t;
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Check floating point exception set for errors occured.
@param fpe Floating point exception set.
@param erp Error report, may be NULL.
@return 1 if error exceptions are set, 0 if there is no
error condition.
Error codes:
* DK4_E_MATH_INVALID<br>
if an invalid operation was performed,
* DK4_E_MATH_DIVZERO<br>
if a division by zero (or small denominator) occured,
* DK4_E_MATH_OVERFLOW<br>
if a range overflow occured (result too large),
* DK4_E_MATH_UNDERFLOW<br>
if a range underflow occured (result too small).
*/
int
dk4fpe_check_error(dk4_fpe_t fpe, dk4_er_t *erp);
/** Clear floating point exceptions.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
* DK4_E_NOT_SUPPORTED<br>
if no functions for floating point exceptions are available,
* DK4_E_SYSTEM<br>
if the feclearexcept() function indicated an error.
*/
int
dk4fpe_clear(dk4_er_t *erp);
/** Obtain floating point exceptions.
@param dptr Address of destination variable to store result.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
* DK4_E_INVALID_ARGUMENTS<br>
if dptr is NULL,
* DK4_E_NOT_SUPPORTED<br>
if no functions for floating point exceptions are available.
*/
int
dk4fpe_get(dk4_fpe_t *dptr, dk4_er_t *erp);
/** Obtain and clear floating point exceptions.
@param dptr Address of destination variable to store result.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
* DK4_E_INVALID_ARGUMENTS<br>
if dptr is NULL,
* DK4_E_NOT_SUPPORTED<br>
if no functions for floating point exceptions are available,
* DK4_E_SYSTEM<br>
if the feclearexcept() function indicated an error.
*/
int
dk4fpe_get_clear(dk4_fpe_t *dptr, dk4_er_t *erp);
#ifdef __cplusplus
}
#endif
#endif
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